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feat(extmark): support end_col=-1 if strict=false #28169

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Problem:
There is an inconsistency between extmarks/highlights regarding the
`end_col` param.

Solution:
Allow end_col=-1 to mean "end of line" (if strict=false).

Co-authored-by: Justin M. Keyes <justinkz@gmail.com>
This commit is contained in:
Stefan Novaković
2026-03-10 00:20:25 +01:00
committed by GitHub
parent dce8bdd247
commit bffca6e26b
4 changed files with 33 additions and 9 deletions
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8
src/nvim/api/extmark.c
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@@ -402,7 +402,7 @@ ArrayOf(DictAs(get_extmark_item)) nvim_buf_get_extmarks(Buffer buffer, Integer n
/// @param opts Optional parameters.
/// - id : id of the extmark to edit.
/// - end_row : ending line of the mark, 0-based inclusive.
/// - end_col : ending col of the mark, 0-based exclusive.
/// - end_col : ending col of the mark, 0-based exclusive, or -1 to extend the range to end of line.
/// - hl_group : highlight group used for the text range. This and below
/// highlight groups can be supplied either as a string or as an integer,
/// the latter of which can be obtained using |nvim_get_hl_id_by_name()|.
@@ -586,9 +586,13 @@ Integer nvim_buf_set_extmark(Buffer buffer, Integer ns_id, Integer line, Integer
colnr_T col2 = -1;
if (HAS_KEY(opts, set_extmark, end_col)) {
Integer val = opts->end_col;
VALIDATE_RANGE((val >= 0 && val <= MAXCOL), "end_col", {
VALIDATE_RANGE((val >= -1 && val <= MAXCOL), "end_col", {
goto error;
});
if (val == -1) {
val = MAXCOL;
}
col2 = (int)val;
}